Buffing-machine



L. scuuuE. BUFFING MACHINE, APPLICATION FILED JULY 2% I918.

Patented Feb. 3,1920

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BUFFING MACHINE. APPLICATION FILED- JULY 24.|91 8,

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Ji vwemfoz Patented Feb. 3, 1920.

2 SHEET,S--SHEET 2.

' Buifin -Machines,

the following is a fullficlear, and ezract des UNITED STATES PATENToFFIoE.

tours scHuLrn, or rrrrsnunen, rEnN sYLvANIm'AssIGnon TO n. I. my PONT DEsm/[owns & COMPANY, or winnmsromnnmwann, A. conronn'rron or DELA- wann.I 1

surmise-insomnia.

To all whom it concern." I

Be it knownthat; I, LOUIS 'SOHUL'I'E, of

Pittsburgh, in thecounty of Allegheny and inthe Stateof Pennsylvania,have invented a certain new and useful. Improvement in and do'he'r'ebydeclare that scription thereof.

'My invention has for an object to provide a machine for performingbuffing or similar operations in which the work is so supported as tosecure uniform. pressure of the same against the bufi'er, and in whichvibrations of'the machine gay ill be taken up or. absorbed withoutdetriment tothe same.

"Another object of. my invention is to pro-,

videlamachine which can be easily set up on a floor although the floorbe uneven, and

in which a proper adjustment of the work supporting table may be readilymade.

Another objectof the invention is. to provide' a worktable driving meanswhich will operate without special adjustments in all positions of thetable.

Further-objects of the invention W111 be in partobvious and in partspecifically pointed.

out in the descriptionhereinafter contained, in which I have shown oneembodiment of my invention, which embodiment I however is to be regardedmerely as illustrative of its principle. r

In the drawings: Figure 1 is a side View of a machine made 1 accordingto my invention;

Fig. 2 is a plan view of the portion of the machine appearingat therightof Fig.1;

Fig. 3 is a plan view of the portion of the machine appearing at theleft of Fig. 1;

Fig. 4 is a section taken on line 44 of Fig.1, looking in the directionof the arrq s. I v

n machines of the type disclosed it has been the practice to provide alarge base or frame carrying the different elements of the machine, theWork holdingtable being slidingly carried by such frame upon ways orguides and certain adjustments being pro-' vided whereby the distancebetween the work holding table and the bufiing roller could be varied asdesired. These machines have'been objectionable in that the extensivebase required to accommodate the table was often difficult to set upproperly upon floors at all uneven. and furthermore, the high speed ofthe bufling roller tended'to set up vibrations:

-5 and 6 so that the same may be positioned, at any desired height andinclination. In

specification-of Iletters Patent. Patented Feb. 3, 1920. Application anmy 24, ms. Serial No. 24am.

throughout the whole frame work which ing'respectively between thepedestals 1 and 3 and 2 and 4:, are a'pair of resilient shafts .5 and 6which form gpides upon which the. Work table 9; may be reciprocated.

A bufiing wheel 10- carried by a shaft 11, is positioned over the workholding table 9,

'by means of a pair of supporting posts 11 and 12, having bearings 13and 14: for receiving the shaft 11. A pulley l5 onthe shaft typeofbufiing mechzmis'm used is not essen# tial tomy invention, andaccordingly will not be' described in greater detail.

Ii /order to position the work table properly with respect to thebuffing wheel 10, I

provide an a u'stment for each of the shafts the present embodiment, theupper portion of each of the pedestals 1 to 4' ismade hollow and a screw16 is mounted therein. A collar 17 surrounds each of the screws 16; andeach collar is pivotally connected as at 18 to the I adjacent shaft end.Suitable devices are provided to rotate the screws 16 to place theshafts 5 and 6 in any desired positiomsuch as the hand wheels 18 on thepedestals 1 and I '2 and the worm gears 19 and worms 20. carried-byshaft 21,- on the pedestals 3 and 4. In this Way it will be seen thatthe supporting parts for the work table .9 may be set up I in' anydesired. location, no matter how uneven may be the elevation of thepoints upon which the pedestals 1,2, 3 and 4c are placed, and the handwheels 18 or shaft'21 turned to adjust the work table 9' to the properdistance from the buliing wheel 10. It is not I requisite in any waythat the tablp 9 be maintained horizontal, as has generally beenthe'case, since adjustment ,may be readily 11 is used to drive the same.The particular made to permit table 9 to'operate in an in- I clinedplane, if desired or necessitated.

Since the table 9 is supported upon resilient shafts -5 and 6 anyvibration ofthe parts of the machine are absorbellfby such I table 9 soas to interfere with the proper shafts rather, than being transmitted tothe I operates. evenly throughout the entire surface of the work.

In order to drive certain parts of the machine I have shown a shaft 22,journaled in brackets 23 and 2a on the pedestals 1 and 2, and carrying apulley 25. It is desirable to move the roller 10 laterally over theWork, and to accomplish this a shaft 26 is driven from the shaft 22through bevel gears 27 and 28, and such shaft 26 carries at its innerend a crank 27 A link 28 is connected to the'crank 27 at one end, andits other end is secured to a rocker' arm 29 which engages a collar 30on the end of the shaft 11, thus moving the roller 10 laterally duringeach revolution of the shaft 26.

In prior machines of the types hereinafter mentioned, the Work table hasbeen driven by devices. such as a rack and gear, which require acorresponding adjustment whenever the level of the work table ischangechso that the proper adjustment of the machine was verycumbersome. I have overcome this difliculty by providing-a linkoperating mechanism for the table 9 which needs no special adjustmentwhen table 9 is raised or lowered. In the form illustrated a pair ofconnecting rods 31 are pivoted to the table 9 at one end, and theirother ends are connected to cranks 32 mounted upon a shaft .33 whichlatter is carried in bearings 34 upon the pedestals 1 and 2. A wheel 35is also carried by such shaft 33 so that, as this wheel is rotated thetable 9 will hereciprocated under the bufling roller 10. If desiredWheel 35 may be. in the form of a ear which engages a pinion 36 on thedriv- 111g shaft 22 so as to make the feed of table 9 positive. It isobvious that raising or lowering the table 9 by adjustment of the shafts5 and 6 will in no way interfere with the operating links for the table,since they may readily assume any angular position corresponding totheelevation of the table 9.

While I have described a specific form of the invention, itis obviousthat many changes mav be made without departing from the principlethereof as definedjinthe following claims.

I claim 1. A butting machine having guides adapted to receive a workholding table, indeQ pendent supports respectively for the two,

ends of said guides, and means for adjustingthe position of the guides,in each of said supports.

2. A buffing machine having guides adapted to receive a work holdingtable, independent. supporting pedestals. for each end of each of saidguides, and means on each of said pedestals for adiusting the positionof the corresponding guide.

3. A bufling machine having guides adapted to receive a work holdingtable, inde-- pendent supporting pedestals for each end.

of each of said guides, an adjusting screw being provided on each ofsaid pedestals and engaging a portion of the corresponding guide tomaintain the same at the desired elevation.

- 4:. Abufling machine having a pair of spring shafts adapted to receivea Work holding table, independent supporting pedestals for each end ofeach of said shafts, anadjusti-ng screw being provided on each of saidpedestals, each end of said shafts having a collar pivoted thereto andengag ingthe corresponding screw.

Ina bufling-ma'chine,a pluralitv of independent pedestals, a workholding table, supporting members for said table each ex tending betweenand devices carried by said pedestals for varying the elevation of saidmembers, the devices at the two ends of'said members being independentlyoperable.

6. A- buifing machine having a .bufling roller, a work holding table,and a resilient support for said table, whereby the work maybe heldagainst the roller with uniform pressure, and vibrations'of the machineab sorbed." I I v 7. A bufling machine having a buffing roller, faworkholding table, and a pair of spring shafts receiving saidtabl'e, andmeans for moving said table along said shafts,-

a pair of said pedestals, I

whereby the work maybe held against the".

-"= roller with uniform pressure and LOUIS soHn r f

